Features: 1. This controller is an auxiliary welding controller for arc welding, which can help arc welding workers to easily complete the welding work and improve work efficiency 2. This controller can accurately output the welding control time, control the welding points to be consistent, and can play the effect of imitating cold welding and spot welding 3. The wiring of the controller is simple and easy to use, which is a good helper for the staff 4. The controller has four working modes, single-point pulse, double-point pulse, continuous pulse, original arc welding 5. The novice is easy to operate, not easy to weld through, not easy to deform Single point pulse: Each time the welding button is pressed, the controller outputs a pulse Double-point pulse: Each time the welding button is pressed, the controller outputs two pulses Continuous pulse: and hold the welding button, the controller continue to output pulses until the button is released Original arc welding: and hold the welding button, the controller continue to output the start signal until the button is released Colour: Material:plastic Note: Installation guide not included,Please check as much as possible to make sure the item is what you need. Tips: The product may be updated constantly ,Due To Different Batches, The Actual Product May Have Slight Differences Or Color Differences, Which Does Not Affect Use Package Contents: 1 * Cold welding controller Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.